Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
tongēre Aelius Stilo ait noscere esse, quod Praenestini tongitionem dicant pro notione. Ennius: alii rhetoricam tongent, Fest. p. 356 Müll. (Sota, v. 4 Vahl. p. 165).